Underwood AR-15 Parts & Accessories

Underwood is the common shortened label for Underwood Ammo, an American boutique ammunition manufacturer based in Sparta, Illinois. The company specializes in high-performance pistol and rifle loads, particularly +P and +P+ defensive cartridges in popular concealed-carry calibers. Underwood ammunition is frequently loaded with Lehigh Defense solid-copper projectiles — Xtreme Defender, Xtreme Penetrator, and Xtreme Hunter — as well as conventional jacketed hollow-points and hard-cast lead loads. The brand''s hunting and defense offerings cover calibers from .380 ACP through 10mm Auto, .44 Magnum, and .45-70 Government. Underwood is popular with shooters looking for non-standard pressure/velocity profiles and copper-bullet construction.

Underwood has 178 products available on GunPartPicker, ranging from $0.00 to $658.24.

Underwood Product Categories

• Ammunition: 58 products
• 10mm Auto: 24 products
• 9mm: 19 products
• .45-70 Govt: 15 products
• .458 SOCOM: 9 products
• .40 S&W: 8 products
• .44 Magnum: 7 products
• .45 Colt: 6 products
• .357 Magnum: 6 products
• .45 ACP: 5 products
• .38 Special: 4 products
• .350 Legend: 4 products
• .380 ACP: 3 products
• .44 Special: 3 products
• .300 Blackout: 3 products
• .338 Lapua: 2 products
• .308 Win: 1 product
• .30-30 Win: 1 product

Stock status: 8 in stock, 170 out of stock.